/**/
#include<stdio.h>
void main()
{
int a=1234;
float f=12.345;
char ch='a';
char b[]="hello,world";
printf("%8d,%2d\n",a,a);
printf("%f,%8f,%8.1f,%.2f\n",f,f,f,f);
printf("%3c\n",ch);
printf("%s\n%15s\n%10.5s\n%2.5s\n%.3s\n",b,b,b,b);





}